diff options
Diffstat (limited to 'src/libstd/sync/once.rs')
| -rw-r--r-- | src/libstd/sync/once.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/libstd/sync/once.rs b/src/libstd/sync/once.rs index 10282ecb658..113fbbf1f61 100644 --- a/src/libstd/sync/once.rs +++ b/src/libstd/sync/once.rs @@ -178,6 +178,10 @@ impl Once { /// happens-before relation between the closure and code executing after the /// return). /// + /// If the given closure recusively invokes `call_once` on the same `Once` + /// instance the exact behavior is not specified, allowed outcomes are + /// a panic or a deadlock. + /// /// # Examples /// /// ``` |